June 14, 2021

Microsoft fixes Critical IE and Remote Desktop flaws

Windows(LiveHacking.Com) – Microsoft has released a series of nine security bulletins, (two Critical and seven Important) to fix 14 different vulnerabilities in a range of its products including Microsoft Windows, Internet Explorer, Microsoft Antimalware and Windows Server Software.

The first of the two Critical level bulletins patches Internet Explorer against a remote code execution attack which could occur if users visited a specially crafted webpage using IE. A successful exploited would mean that the attacker would gain the same rights as the current user. The good news is that both of these IE issues were privately disclosed and Microsoft has not detected any attacks or customer impact. The vulnerabilities affect Internet Explorer 6, Internet Explorer 7, Internet Explorer 8, Internet Explorer 9, and Internet Explorer 10.

There is also a remote code execution patch for Windows in connection with the Windows Remote Desktop Client ActiveX control. As with the IE bugs, this vulnerability could allow remote code execution if an attacker convinces a customer to view a website containing specially crafted content that exploits the vulnerability. This bug is seen as Critical for the Remote Desktop Connection 6.1 Client and the Remote Desktop Connection 7.0 Client on Windows XP, Windows Vista, and Windows 7.

Although Windows 8 was not affected by the Remote Desktop vulnerability, it isn’t immune to other problems including an exclusive patch for problems with the Windows 8 antimalware client used in Windows Defender.

Microsoft received a private report about a vulnerability that could allow elevation of privilege due to the pathnames used by the Microsoft Antimalware Client. If successfully exploited an attacker could execute arbitrary code and take complete control of an affected system. This would allow them to install programs and create new accounts. The bulletin is marked as Important (and not Critical)  for Windows 8 and Windows RT as an attacker must have valid logon credentials to exploit the vulnerability.

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